Oil-Spill Triggered Shift in Indigenous Microbial Structure and Functional Dynamics in Different Marine Environmental Matrices

• DOI: 10.1038/s41598-018-37903-x
• Publication Date: 2019-02-04T11:04:09Z
• Authors: C. S. Neethu; C. Saravanakumar; R. Purvaja; R. S. Robin; R. Ramesh
• Keywords: 0301 basic medicine; Geologic Sediments; 0303 health sciences; Bacteria; Chemical Phenomena; Geography; Fatty Acids; Naphthalenes; DNA, Ribosomal; Article; 6. Clean water; 03 medical and health sciences; 13. Climate action; RNA, Ribosomal, 16S; Environmental Microbiology; Petroleum Pollution; Seawater; 14. Life underwater; Polycyclic Aromatic Hydrocarbons; Phylogeny; Ships

Abstract Microbial degradation has long been recognized as the key rescue mechanism in shaping oil polluted marine environments and role of indigenous populations or their functional genomics have never explored from Indian environments, post an spill event. In current study, high throughput metagenomic analysis, PLFA profiling mass spectrophotometric analysis was performed combination with metabolomics to capture signature variations among microbial communities sediment, water laboratory enrichments. Contrary previous reports, bloom Pseudomonadales (specifically genus Acinetobacter ) oiled sediment Methylococcales outnumbered relative abundance Alcanivorax response hydrocarbon contamination. Overall enhancement xenobiotic suggested by metabolomic event varying quantitative assemblage enzymes were found be involved utilization. Laboratory enrichments revealed competitive advantage over although unique taxa belonging later also enriched under vitro conditions. Simultaneous study provided explicit evidences on existence differential community dynamics, offering insight into possibilities formulating nature identical solutions for pollution.